Earthquake with magnitude of Md 2.8 on date 28-03-1985 and time 11:49:26 (UTC) in region Confine Italia Slovenia (SLOVENIA)

A magnitude Md 2.8 earthquake occured in region: Confine Italia Slovenia (SLOVENIA), on

  • 28-03-1985 11:49:26 (UTC)
  • 28-03-1985 12:49:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.72, 13.85 at 7 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Monrupino TS 4 893 893
Sgonico TS 8 2062 2955
Trieste TS 10 204420 207375
San Dorligo della Valle-Dolina TS 13 5801 213176
Muggia TS 14 13137 226313
Duino-Aurisina TS 15 8561 234874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km NE of Trieste (204420 inhabitants)
61 Km SE of Udine (99169 inhabitants)
96 Km E of Pordenone (51229 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 Md 2.8 1985-03-28
11:49:26
45.72 13.85 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 3759
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-28 11:49:26 ± 0.818
Latitude 45.72 ± 0.05
Longitude 13.85 ± 0.07
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3759

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 7491
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 273
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.014
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 3759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1985-03-28T11:50:14.00 10.0 undecidable manual SN 282 0.014 -0.71 0.3
--.FO1.Z. 1985-03-28T11:50:04.50 10.0 undecidable manual SN 320 0.0103 -0.22 0.8
--.CTI.Z. 1985-03-28T11:49:54.50 10.0 undecidable manual PN 282 0.014 0.27 1
--.RBL.Z. 1985-03-28T11:49:53.50 10.0 undecidable manual SG 344 0.0066 0.84 0.2
--.FO1.Z. 1985-03-28T11:49:49.00 10.0 positive manual PN 320 0.0103 0.54 1.7
--.RBL.Z. 1985-03-28T11:49:40.50 10.0 undecidable manual PG 344 0.0066 -1 0.3
--.TRI.Z. 1985-03-28T11:49:30.00 10.0 undecidable manual SG 258 0.0005 0.38 0.8
--.TRI.Z. 1985-03-28T11:49:28.00 10.0 positive manual PG 258 0.0005 -0.2 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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